hydrobiologia volume 264 (1993), contents no. 1 A. Yafiez-Arancibia, A. L. Lara-Dominguez & J. W. Day Jr.: Interactions between mangrove and seagrass habitats mediated by estuarine nekton assemblages: coupling of primary and secondary production S. V. Briggs, M. T. Maher & D. J. Tongway: Dissolved and particulate organic carbon in two wetlands in southwestern New South Wales, Australia T. Alm & E. Willassen: Late Weichselian Chironomidae (Diptera) stratigraphy of Lake Nedre AErasvatn, Andgya, Northern Norway M. D. Eyre, J. G. Pilkington, R. Carr, R. P. McBlane, S. P. Rushton & G. N. Foster: The running- water beetles (Coleoptera) of a river catchment in northern England W. Hamza, M. Manca & D. Ruggiu: Field estimates of zooplankton community grazing in the limed Lago d’Orta (Italy) by the use of a radioisotope-free technique C. D. Jersabek & W. Koste: Additional notes on taxonomy and ecology of Anuraeopsis miracleae Koste, 1991 (Rotatoria : Monogononta) from an Austrian alpine lake Short note J. Mees & N. Fockedey: First record of Synidotea laevidorsalis (Miers, 1881) (Crustacea: Isopoda) in Europe (Gironde estuary, France) no. 2 R. K. Edgar & K. Laird: Computer simulation of error rates of Poisson-based interval estimates of plankton abundance S. M. Rahmatullah & M. C. M. Beveridge: Ingestion of bacteria in suspension Indian major carps (Catla catla, Labeo rohita) and Chinese carps (Hypophthalmichthys molitrix, Aristichthys nobilis) R. MarkoSova & J. JeZek: Bacterioplankton interactions with Daphnia and algae in experimental enclosures M. O. Garcia de Emiliani: Seasonal succession of phytoplankton in a lake of the Parana River floodplain, Argentina L.-o. Sanoamuang: Comparative studies on scanning electron microscopy of trophi of the genus Filinia Bory De St. Vincent (Rotifera) no. 3 P. Madoni: Ciliated protozoa and water quality in the Parma River (Northern Italy): long-term changes in the community structure J. R. Bidwell & A. G. Heath: An in situ study of rock bass (Ambloplites rupestris) physiology: effect of season and mercury contamination |. Hudec: Redescription of Daphnia deserti (Gauthier, 1937) (Crustacea: Daphniiformes: Daph- niidae) M. Manca & A. G. Tognota: Seasonal changes in morphology and size of Daphnia hyalina Leydig in Lago Maggiore H. Léffler: Anostraca, Notostraca, Laevicaudata and Spinicaudata of the Pannonian Region and in its Austrian area G. R. Lotufo & C. E. F. da Rocha: Intertidal interstitial Halicyclops from the Brazilian coast (Copepoda: Cyclopoida) E. O. Wakwabi & V. Jaccarini: The distribution and abundance of planktonic penaeid larvae in Tudor creek, Mombasa, Kenya Author index (volume 264)